Domestic water-filter.



No. 678,846. Patented luly l6, I90I.

n. T. WEAVER.

DOMESTIC WATER FILTER.

' (Application filgd m 9, 1901.)

(No Model.)

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. UN E tSTA PATE T OFFICE.

ROBERT T. WEAVER, OF NEW YORK, N. Y., ASSIGNOR TO THE GENERAL ENGINEERING COMPANY, OF NEW JERSEY.

DOMESTIC WATER-FILTER.

SPECIFICATION forming part of Letters Patent No. 678,846, dated July 16, 1901.

Application filed May 9, 1901. Serial No. 59,394. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT T. WEAVER, a citizen of the United States, and a resident of the city of New York, county of New York, and State of New York, have invented certain new and useful Improvements in Domestic Water-Filters, of which the following is a specification.

This invention relates to filters of the general character disclosed in Letters Patent of the United States No. 650,884, granted to me June 5, 1900, wherein the filtering medium is a cylindrical structure of stone, earthenware, or suitable composition mounted to rotate Within the Water-receiving chamber. Its object is to effect removal of deposits on the exterior face of the stone that would impair its efficiency by means of a scraper so constructed and mounted as to actuniformly upon the face of the stone as it wears away and by its action in use to maintain the cylindricity of the stone as it becomes worn in use or at all times conform to its surface, and at the same time to simplify the structure of the several parts and make the apparatus as compact and small as possible for a given capacity.

In the accompanying drawings, Figure 1 is a longitudinal section; Fig. 2, asection on theline 2 2 of Fig. 1; Fig. 3, a section on the line 3 3 of Fig. 1.

A is a hollow cylinder or casing integrally closed at one end and adapted to receive at the opposite end a flanged cap B, secured thereto by screws (not showing in the drawings) passing through the cap and seated in threaded apertures in bosses or enlargements 1), formed upon the inner surface of the cyl inder in the process of casting. The filtering medium 0, of suitable porous stone or composition, is centrally apertured to receive the hollow rod 0, having therein multiple apertures c, the stone being clamped between a plate D, integral with or rigidly attached to the tube, and the nut E, applied to the threaded rear end of the tube and formed with a trunnion seated in a bearing in the rear head of the cylinder. The head or cap B is formed with a hollow projection B, (shown as cylindrical,) constituting a water-receiving chamber, the outer end of which is closed by a cap B retained by screw-bolts (not showing in the drawings) seated in sockets in bosses or projections (Z, formed in the process of casting on the inner wall of the part B. The tubular shaft or rod 0' passes through the caps B and B suitable stufling-boxes S S being applied around it, and its front end has brazed, swaged, or rigidly secured in it a rod E, passing through the outer stufling-box S and provided with a hand-wheel. An aperture c in the shaft beyond the inner stuffingbox admits filtered water to the chamber formed by the parts B B The casingAis provided, preferably at its bottom, with a waterinlet connection F, having an ordinary cock, and a water-outlet connection F, provided with an ordinary faucet. At the bottom of the casing is also secured a square post G,'adapted to be seated in a correspondingly-shaped socket in the end of the bracket-arm H, hav ing a plate H for attachment to a wall or other suitable support. In all parts of the construction the bosses or additional thickness of metal requisite for the various screwbolts and connection of the other parts are formed on interior surfaces. Such is the general construction of filter to which I have shown my invention applied. The details of construction may be varied, however, and may be, for instance, substantially such as those shown in my prior patent before mentioned.

By means of the hand-wheel the hollow shaft and filter stone or body may be rotated for the purpose of cleansing its exterior surface. In the embodiment of the invention which the drawingsillustrate I have adopted the following construction: Within the easing at one side are formed two or more lugs or projections L, to which are hinged, by means of a rod Z or otherwise, two or more curved arms M, which extend upwardly and have jointed to them by a rod m or otherwise a weight N, of segmental shape, extending downwardly at the opposite side of the cylof the gravity of the weight N upon thesurface of the stone. The scraper and weight are preferably substantially equal in length to the length of the filter-stone, the weight being cut away, as shown at m, to clear one of the bosses b. When the surface of the stone is to be cleansed, it may be rotated, and the deposit thereon will be removed by the scraping edges 0 0. During this time the filteredwater faucet'or outlet may be closed, and the water inlet F and outlet F should be open. The deposits removed by thescraper from the face of the stone will be washed out through the pipe F. If the scraping edges wear uniformly at all points, their action upon the stone would be to maintain its cylindricity. On the other hand, if because oflhard parts in the stone or composition the surface of the stone and edges of the scraper wear unevenly the scraper will nevertheless at all times conform to the surface of the stone and effectively act upon it at all points. I have demonstrated by practical experience that with a hinged gravity-scraper such as that illustrated the surface of the stone is effectively cleansed at all points and wears substantially uniformly throughout its length, and the efficiency of the scraper is maintained throughout the life of the stone. A characteristic feature of the invention is the use of a curved or segmental scraper frame or support disposed within the annular space surrounding the stone, hinged at one side of the stone, extending up over the stone and down upon the other side, and having one or more scraper edges bearing upon the face of the stone. The casing A may be with this construction of plain cylindrical form, provision of a special cavity within it for the accommodation of a scraper being unnecessary. The annular space between the casing and stone is not necessarily increased by reason of the location of the segmental gravity scraperframe within it, and hence the structure is as a whole very compact, may be inanfactured at small cost, and is, as experience has demonstrated, very efficient and durable.

If the entire segmental frame, hinged at one side and carrying the scraper, were rigid, as

the stone and scraper wore away the'part of the frame adjacent its hinge connection with the casing would come in contact with the stone, with the result that either the stone would be cut and injured at the point of contact or the scraper would be held out of effi cient contact with it. By introducing the hinge-joint m this difficulty is obviated, and the scraper acts uniformly upon thestone as its diameter decreases in use.

I claim as my invention 1. In a filter, the combination of a casing, a cylindrical filtering-body mounted to be rotated therein, and a gravity scraper-frame hinged at one side of the stone, extending up over it, having one or more scraper edges hearing on the filtering-body, and disposed in the annular space between it and the casing.

2. In a filter, the combination of a casing, a cylindrical filtering-body mounted to be rotated therein, a segmental gravity scraperfraine hinged to the interior of the casing at one side of the body and extending up over and beyond its top, weighted at its free end and having one or more scraper edges hearing on the filtering-body.

3. In a filter, the combination of a casing, a cylindrical filtering-body mounted to be rotated therein, arms hinged to the interior of the casing at one side of the body and extending up over it, a weight hinged in the ends of the arms and extending down on the opposite side of the body, and a scraper on the under face of the weight adjacent its hinge connection.

4. In a filter, the combination of a casing, a cylindrical filtering-body mounted to rotate therein and a gravity scraper-frame comprising a section hinged to the casing at one side of and extending up over the stone, and a second section hinged to the free end of the first one and having one or more scraper edges bearing on the stone.

In testimony whereof I have hereunto subscribed my name.

ROBERT T. WEAVER. Witnesses:

JOHN- P. WESNER, JOHN L. PERRY- 

